ZIP Code 46373 – Saint John, IN
Saint John, Indiana · Lake County · Central time
| ZIP code | 46373 |
|---|---|
| City | Saint John |
| State | Indiana |
| County | Lake County |
| Population | 18,843 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 10.88 sq mi |
| Center (lat, long) | 41.4418, -87.4678 |
Area codes in this area
These are the area codes that most often serve ZIP 46373 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 46373
ZIP code 46373 is assigned to Saint John, Indiana. It lies in Lake County. Its Census area covers about 10.88 square miles of land. The closest neighboring ZIP is 46311 (Dyer), about 2.8 miles away.
Every address in 46373 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources